If the rumors are true, heads will roll.
First will be the security folks, who allowed a breach. Then the detection and hunters who should have caught the activity before ex-filtration of the code. Then it will be a hunt for the perpetrators. If they are found, oh my!

But the chaos will not end there. Because if the code is in the wind, others will be able to scour and break it down.

Source code would give researchers good insights to who wrote the actual code. For a while, DARPA had a fasttrack program which harvested a lot of external tools, without the pesky need of a background check. They were very clear, they wanted offensive tools. Knowing who wrote it will shine a spotlight on them and all subsequent public work. Might also get them a few more jobs.

One of the more interesting aspects will be detection of latent signatures. So, a smart researcher may be able to tell where the tools have been used, and against whom! That could stir up a huge international political hornets nest. Right before election time.

Wow. Again, only if it is true. I am highly speculative someone was able to get far enough into such a secure network and get all their most secret digital toys.